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Instrument transformers<br />
Outdoor IEC medium voltage instrument transformers<br />
IEC product portfolio is encapsulated in hydrophobic<br />
cycloaliphatic epoxy (HCEP) ensuring correct operation in<br />
heavily polluted conditions.<br />
−−Reduced contamination-related leakage currents<br />
−−Reduced probability of flashover<br />
−−Improved water beading and runoff<br />
−−Improved life expectancy<br />
−−Improved quality and system reliability<br />
−−Improved performance in cold climate<br />
Our product offering<br />
−−Multi-core current transformers<br />
−−Single pole (line – ground) insulated voltage transformers<br />
−−Double pole (line – line) insulated voltage transformers<br />
−−Current transformer for NPS three-phase <strong>outdoor</strong> switch<br />
disconnector<br />
Technical data Outdoor medium voltage current transformers Outdoor medium voltage transformers<br />
Insulation voltage kV 7.2 – 40.5 7.2 – 40.5<br />
Impulse withstand voltage kV 60 – 200 60 – 200<br />
Rated frequency Hz 50 – 60 50 – 60<br />
Rated primary<br />
10 – 2500 A<br />
10 000/√3 – 35 000/√3<br />
10 000 – 22 000 V<br />
Dynamic <strong>res</strong>istance kA up to 125 –<br />
Thermal <strong>res</strong>istance up to 50kA/1s 750 VA<br />
Rating factor as per IEC 1.9 for 8h<br />
Burden class as per IEC as per IEC<br />
1 TDO | 2 TJO | 3 TPO<br />
1 2 3<br />
32 Instrument transformers | ABB Medium Voltage Products
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